Direct monitoring of the stages of development of the embryo

The article was consulted professionally by Master, Dr. Nguyen Thi Cam Van – IVF Lab Doctor – Center for Assisted Reproduction – Share99 Times City International Health Hub. The doctor has experience and strengths in performing intensive techniques on assisted reproduction in the in vi test tube fertilization lab.

The embryo is formed at the 5th week (from the moment of fertilization) and develops within 6 weeks before being called the fetus. This is a very important stage, forming the basic shape of a baby, the bodies in the body.

1. Stages from ovulation to embryonic formation

  • Ovulation

In the natural cycle, every month from the woman's ovaries there will be an egg released into the ovation. Ovulation occurs for about 2 weeks adjacent to the day of the first menstruation in the cycle.

  • Eggs move into the ovulation tube

After the egg is released from the ovaries, it moves into the ovulation tube. And wait there to wait for the sperm to fertilize.

  • The journey of sperm after intersym

The number of sperm in one ion can be up to 150 million sperm. After ionation, the sperm swims upstream towards the ovulation tube to complete the fertilization task. Fast-swimming sperm can reach eggs in half an hour, if swimming slower it can take several days. Sperm can live in the woman's body for 48-72 hours. Only a few hundred sperm can reach the egg because it is impossible to overcome the natural barriers in the woman's body.

Stages from ovulation to embryonic formation

Stages from ovulation to embryonic formation
  • inseminate

It takes about 24 hours for the sperm that has entered the egg to be fertilized. When sperm enters the egg, the surface of the egg changes properties so as not to allow other sperm to pass through. At the time of fertilization, all genetic characteristics of the baby are complete, including the sex of a boy or girl.

  • Cells begin to divide

Fertilized eggs begin to grow rapidly, dividing into several cells. It leaves the ovulation tube and enters the uterus 3-4 days after fertilization. In rare cases, fertilized eggs nest in the ovulation tube. This phenomenon is called an extra-intra-uterus pregnancy. A ruptured intra-uterus is an emergency in obstetrics and gynecology because of the risk of life-threatening mothers.

  • Nesting in the uterus

After moving to the uterus, the fertilized egg will adhere to the lining of the uterus (endo will. This process is called nesting. After nesting, the cells continue to divide.

  • Hormone changes during pregnancy

Within 1 week after conception, a hormone called human chorionic gonadotropin (hCG) can be found in a woman's blood. This hormone is made from cells that will become placenta. The hormone hCG can be detected in a blood or urine pregnancy test. But it usually takes 2-3 weeks for hCG levels to be high enough to be tested with a home pregnancy test stick for accurate results.

  • Fetal development

Fertilized eggs after adhesion to the uterus, some cells grow into placenta, others develop into embryos. The pregnant heart begins to beat from the 5th week. The brain, spinal cord, heart and other muscles begin to be formed. At the 8th week, the embryo continues to develop and is called the fetus, about 1.5 cm long. The fetus is developed until complete in about 40 weeks.

Fetal development

Fetal development

2. Stages of development of the embryo

From the time of fertilization to the formation of follicle embryos that adhere and develop in the body of the uterus, the embryo begins to be formed and developed. The embryo develops from the 5th to the 10th week (from the moment of fertilization). The stages of development are described as follows:

  • 5th week embryo (3 weeks after conception)

This is the stage of formation of embryos and other muscles (brain, heart, spinal cord). The embryo is composed of 3 layers of cells:

    • Embryonic outer envelope: Embryonic peripheral cells will develop into skin muscles, central and peripheral nervous systems, eyes, ears and connective tissues
    • Embryonic mescym: Embryonic mescytal cells will develop into bones, muscles, kidneys and fetal reproduction systems.
    • Embryonic endotcosa: Embryonic endotonic cells will develop into the lining mucosa of the body tubes, lungs, intestines and bladder.

5-week-old fetus

5th week embryo
  • 6th week embryo (4 weeks after conception)

This week, the nervous tube along the back of the embryo closes, the heart begins to pump blood, the inside ear and the jaw arc begin to form. The embryo begins to bend C-shaped, the germ of the upper and lower 30s appears.

  • 7th week embryo (5 weeks after conception)

Nostrils and glass are formed, the germ of the upper and lower 30s grows longer.

  • 8th week embryo (6 weeks after conception)

Limbs grow longer, fingers begin to form. 2 outer ear holes are shaped, the fetal eye begins to see. The upper lip and outer nose are formed. The body of the embryo begins to straighten.

  • 9th week embryo (7 weeks after conception)

The arm bone grows long, the elbow area is formed. The toes begin to form, the eyelids, 2 ears continue to finish.

7 weeks after conception

Erm 7 weeks after conception
  • 10th week embryo (8 weeks after conception)

The head of the embryo is more rounded, the neck begins to be formed, the finished eyelids can be closed open to protect the eyes.

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Consultation at Share99 Assisted Reproduction Center

Customers can come to The Center for Assisted Reproduction – Share99 International Health Hub. This is the leading center in Vietnam built and applied a comprehensive treatment process, combining both male and obstetrics and gynecology to offer optimal methods for each case of patients.

Advantages when customers choose Share99 assisted reproduction center:

  • Equipped with modern equipment, clean air system according to international standards to ensure lab quality, single implant system optimizes the quality of workpieces, improves the success rate for each cycle of artificial inse fertilization.
  • Perform most advanced assisted reproduction techniques in the world: ICSI (injection of sperm into ovule cells); support for membrane drainage workpieces; reproduction reserves: freezingembryos, freezing,freezing ovules to help customers proactively give birth at will, transfer embryos on the 5th day, minimize pregnancy; male infertility techniques (PESA, MESA, TEFNA, TESE)
  • Besides advanced assisted reproduction methods, a team of good doctors in the country and the world, with prestige and long experience in the field of rare and late.

For direct advice, please click hotline number or register online HERE. In addition, you can register for remote consultation HERE

Source: webmd.com, little-einsteins.com

VIEW MORE

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  • In what cases is the pumping of sperm into the uterus chamber (IUI) in which case?
  • What is pre-embryo transfer genetic screening? Why should I do it?

SEE MORE:

  • What does embryo quality mean when doing IVF?
  • How does the embryo culture process take place?
  • What is embryo culture? Why do it?

About: John Smith

b1ffdb54307529964874ff53a5c5de33?s=90&r=gI am the author of Share99.net. I had been working in Vinmec International General Hospital for over 10 years. I dedicate my passion on every post in this site.

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